CD storage box

ABSTRACT

A CD storage box includes a main box frame, a front cover, a left cover, a right cover, two turning knobs, two knob gears, a top cover, a brake shaft, multiple swing levers, a rear cover, a grip handle, a left frame and a right frame. Once the turning knobs are rotated, the knob gears can actuate the driven gears to rotate with the brake shaft and abrupt pieces on the surface of the brake gear can stir the swing levers to push CDs out for being browsed chosen.

BACKGROUND OF THE INVENTION

[0001] 1. Field of The Invention

[0002] The present invention relates to a compact disk (CD) storage box and particularly to a CD storage box, which can move the compact disks in and out automatically, for the user being possible to browse multiple compact disks at a time and choose desired ones.

[0003] 2. Description of Related Art

[0004] The traditional CD box stands usually have an open type structure to offer a function of easy CD storage in addition to a variety of their appearances available. However, the traditional CD box only offers a large storage space for the CDs only but it is hard for the user to select needed CDs therein. Another type of traditional CD box stand is for placing CDs with packing cases so that it is necessary to take out the case before the CD can be used. Hence, it is a very tedious job for the user to take out specific CDs from the traditional CD storage boxes.

[0005] Due to CD burner being very popular in our daily life at the present time, the burned new CD usually is not received in a CD case and it becomes a problem of data in the burned CD being easily damaged without any protections.

[0006] Taiwanese Utility model Nos. 3192193 (Filing No. 86210685) and 403085 (Filing No. 88202880) are prior art related to a CD storage box and available in the market. Deficiencies resided in the prior art are summarized in the following:

[0007] 1. A hard operated front cover is used: It is necessary to use hands while the front cover is to be closed.

[0008] 2. Single operation direction is designed and only two CDs can be sent out: A single and unchanged direction for browsing CDs is offered after CDs being output and only two CDs can be chosen. Due to interval difference being designed improperly, next two CDs can be chosen only after the two output CDs being retreated. After the CDs being output, it is hard to locate the output CDs because of no locating mechanism being provided. For instance, if the turning knob is excessively rotated slightly, the CD retreats immediately and there is no time for the user to take out the desired CD.

[0009] 3. Larger operation space is needed: The operation of the CD in and out is actuated by slide plates so that it is necessary to have large moving space so that operation space has to be increased. However, a large operation space makes the CD inconveniently placed and use.

[0010] 4. Stacking up the CD storage boxes is impossible: The prior art is not possible for multiple CD storage boxes to be stacked vertically and they are only can be placed on a flat plane.

[0011] 5. The grip handle is not available: Due to consideration of convenience being not counted in the prior art, a grip handle has designed without a grip handle so that it is hard to be carried about or delivered.

SUMMARY OF THE INVENTION

[0012] The crux of a CD storage box according to the present invention is to overcome the deficiencies of the prior art and a main box frame, a front cover, a left cover, a right cover, two turning knobs, two knob gears, a top cover, a brake shaft, multiple swing levers, a rear cover, a grip handle, a left frame and a right frame are included. Once the turning knobs are rotated, the knob gears can actuate the driven gears to rotate with the brake shaft and abrupt pieces on the surface of the brake gear can stir the swing levers to push CDs out for being browsed chosen.

[0013] An object of the present invention is to provide a CD storage box with which the CDs are positioned after being sent out for the user being capable of browsing the CDs from different directions easily.

[0014] Another object of the present invention is to provide a CD storage box with which multiple stacked CD storage boxes are possible for saving occupied space.

[0015] A further object of the present invention is to provide a CD storage box, which is light, compact and easy assembly.

[0016] A further object of the present invention is to provide a CD storage box, which has a grip handle for being carried about with the user.

[0017] A further object of the present invention is to provide a CD storage box, which is capable of preventing the CDs from falling down carelessly.

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be more fully understood by reference to the following description and accompanying drawings, in which:

[0019]FIG. 1 is a perspective view of a CD storage box according to the present invention;

[0020]FIG. 2 is a perspective view illustrating the CD storage box shown in FIG. 1 in a state of using;

[0021]FIG. 3 is a perspective view illustrating another CD storage box being in the process of being mounted to the CD storage box shown in FIG. 2;

[0022]FIG. 4 is a perspective view illustrating the two CD storage boxes shown in FIG. 3 having been joined to each other;

[0023]FIG. 5 is an exploded perspective view of the CD storage box shown in FIGS. 1 and 2;

[0024]FIG. 6 is a perspective view of a main box frame in the CD storage box;

[0025]FIG. 7 is enlarged fragmentary perspective view of the main box frame assembling with a front cover;

[0026]FIG. 8 is a sectional view illustrating inner actuation mechanism in the CD storage box and a state of a CD being pushed outward;

[0027]FIG. 9 is a plan view illustrating a stir lever in the CD storage box pushing a CD outward;

[0028]FIG. 10 is a perspective view illustrating the inner actuation mechanism providing a front cover, a left and right lateral walls, a rear wall, a brake shaft and stir levers;

[0029]FIG. 11 is a fragmentary perspective rear view of the main box frame;

[0030]FIG. 12 is a fragmentary perspective sectional view illustrating the main box frame being associated with the rear wall, the top wall, the brake shaft and the stir levers;

[0031]FIG. 13 is a perspective view of the front cover of the present invention;

[0032]FIG. 14 is a perspective view of the left wall of the present invention;

[0033]FIG. 15 is a perspective view of the right wall of the present invention;

[0034]FIG. 16 is a perspective view of a ratchet with a locating spring plate in the first embodiment thereof;

[0035]FIG. 17 is a side sectional view illustrating the ratchet shown in FIG. 16 engaging with the locating spring plate;

[0036]FIG. 18 is an enlarged fragmentary side view illustrating the ratchet shown in FIG. 16 engaging with the locating spring plate;

[0037]FIG. 19 is a perspective view of a ratchet with a locating spring plate in the second embodiment thereof;

[0038]FIG. 20 is a side sectional view illustrating the ratchet shown in FIG. 19 engaging with the locating spring plate;

[0039]FIG. 21 is an enlarged fragmentary side view illustrating the ratchet shown in FIG. 19 engaging with the locating spring plate;

[0040]FIG. 22 is an exploded perspective view of the ratchet and the locating spring plate shown in FIG. 19;

[0041]FIG. 23 is a perspective view of the top wall of the present invention;

[0042]FIG. 24 is an enlarged fragmentary perspective sectional view of the top wall shown in FIG. 23;

[0043]FIG. 25 is a perspective view of the brake shaft of the present invention;

[0044]FIG. 26 is a perspective view illustrating the brake shaft actuating a stir lever;

[0045]FIG. 27 is a perspective view of the rear wall of the present invention;

[0046]FIG. 28 is a perspective view of a left frame of the present invention;

[0047]FIG. 29 is a perspective view of a right frame of the present invention; and

[0048]FIG. 30 is a fragmentary sectional view illustrating the two CD storage boxes being joined to each other by way of the left frame.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0049] Referring to FIGS. 1 to 4, basically a CD storage box according to the present invention include a main box frame 1, a front cover 2, a left cover 3A, a right cover 3B, two turning knobs 4, two knob gears 42, a top cover 5, a brake shaft 6, a plurality of swing levers 7, a rear cover 8, a grip handle 9, a left frame 10A and a right frame 10B so that the CD storage box can push CDs 11 therein outward and withdraw them inward.

[0050] Referring to FIGS. 5 to 7 in company with FIG. 11, the main box frame 1 is a box frame with an open front side and rear side with a plurality of shaft supports 12 being disposed spacing apart from each other at the top and near the rear side thereof for locating the brake shaft 6. The main box frame 1 at the left lower side thereof provides a projection 13 with a fitting groove 131 next to the front side for mounting a torsion spring 24. The main box frame 1 at the right lower side thereof provides a pin shaft 13A for fitting with a speed reduce gear 132 so as to mesh with a sector gear 25 of the front cover 2. The front cover 2 is subjected to extension force of the torsion spring 24 while the front cover 2 is opened so that the front cover 2 is capable of automatically opening smoothly, gradually and noiselessly. Further, the main box frame 1 at the internal part thereof between the top side and the bottom side has a plurality of integrated and equally spaced curved guide groove partitions 14 to form guide grooves corresponding to inlet grooves 15 provided at the front side thereof for admitting CDs 11. The groove partitions 14 at the rear ends thereof have a locating recess 19 respectively (see FIG. 11) corresponding to a protruding part of each support plate 83 at the rear cover 8. The main box frame 1 at both upper lateral sides thereof extends outward a shaft 16 respectively under two of the shaft supports 12 for locating a knob gear 42 respectively. A locating groove 161 is disposed beside the shaft 16 for accommodating a locating spring plate 162 (see FIG. 11). Both the top side and two lateral sides of the main box frame 1 have a plurality of fitting holes 17 and the bottom of the main box frame 1 at two sides thereof extends downward a stand projection 18 for the main box frame 1 being capable of standing in a certain direction. Each stand projection 18 at the outer side thereof is provided with a groove 181 for another CD storage box being fixedly stacked up the original storage box by way of a hook 103 on the left and right support frames 10A, 10B elastically engaging with the respective groove 181.

[0051] Referring to FIG. 13 in company with FIGS. 5, 7 and 8, the front cover 2 at the inner side thereof has a row of arched guide grooves 21 corresponding to inlet grooves 15 and the CDs can stay at the guide grooves 21 in case of being pushed outward. The inner side of the front cover 2 at the central upper edge thereof has a lock hook 22. The bottom of the front cover 2 at two lateral sides thereof has an outward extending pin 23 respectively so as to be engaged to a pin hole 34 located at a lower front corner of the left and right covers 3A, 3B respectively and the torsion spring 24 is disposed at one of the two lateral sides next to one of the pins 23 with a leg of the spring 24 being received in a spring groove 241 at the lateral side to bias the front cover 2. The sector gear 25 is integrally made with the other lateral side at the other pin 23 and meshes with the speed reduce gear 132, which has been mentioned previously, to help the front cover 2 opening steadily and gradually. Hence, when an elastic button 52 at the top cover 5 is pressed lightly, the front cover 2 can be released to reveal the main box frame 1 easily by way of the extension force of the torsion spring 24.

[0052] Referring to FIGS. 14 and 15, the left and right covers 3A, 3B at the peripheries thereof have a joining rim 31 with engaging recesses 311 for being joined to the main box frame 1, the rear cover 8 and the top cover 5 tightly. The inner side of the left and right covers 3A, 3B has multiple holding jaws 32 equally spaced apart from each other and provide a piercing hole 33 respectively corresponding to the turning knobs 4 for being mounted with the knob gears 42. Further, as the preceding, the pin hole 34 is located at the lower front corner of the left and right covers 3A, 3B respectively for fitting with the pins 23. The left cover 3A is provided with a hollow post 35 for fitting with the projection 13 to prevent the torsion spring 24 from falling down. The right cover 3B at the lower front corner has a cylindrical rib part 36 with a small protrusion 37 against the side face of the speed reduce gear 132 to prevent the speed reduce gear 132 from loosening during turning.

[0053] Referring to FIGS. 5 and 22, the turning knobs 4 are disposed at the outer sides of the left and right covers 3A, 3B corresponding to the piercing holes 33. Each of the turning knobs 4 is provided with an axial hole 41 (see FIG. 22) respectively for being joined to the knob gears 42 and a driven gear 62 is corresponding to the knob gear 42 so that the driven gear 62 can be actuated to rotationally move the brake shaft 6.

[0054] Referring to FIGS. 16 to 18, the first embodiment for the respective knob gear 42 is illustrated. The knob gear 42 shown in FIG. 16 has a shaft 421 extending axially from a lateral side thereof and a driving gear 423 is fixedly attached to the shaft 421. A gear base 422 is disposed at another lateral side opposite to the shaft 421 with a plurality of catching hooks 4222 equally spacing apart from each other and each catching hook 4222 is next to a lateral side of a “V” shaped locating indentation 4221 respectively. The gear base 422 has a central nest 424 to accommodate the shaft 16. The locating indentation 4221 has a 90° open angle for contacting with a pressing jut 1621 of the locating spring plate 162. Further, a bulge 4222 is next to the other lateral side of the locating indentation 4221 to correspond to a notch 1622 and once the bulge 4222 engages with the notch 1622, it is not possible for the user to rotate the turning knob 4 counterclockwise and it is possible for the knob gear 42 to rotationally move back and forth in a free extent 4223 as long as the bulge 4222 keeps contact with the notch 1622. The back and forth movement corresponds that the CDs 11 in the same row can be sent out and retreated repeatedly. In the meantime, the driven gear 62 is actuated to move by the driving gear 423.

[0055] Referring to FIGS. 19 to 22, the second embodiment of the knob gear 42 is illustrated. A gear base 422 shown in FIG. 19 has a plurality of locating pairs equally spaced apart from each other and each locating pair has a V shaped locating part with an open angle of 45° and two locating protrusions 4221A, 4221B with a about 45° V shaped dent part 4222A between the locating projections 4221A, 4221B. The locating spring plate 162A has an about 45° slant jut 1621A corresponding to the dent part 4222A such that the knob gear 42 can rotate clockwise only in case of the slant jut 1621A being inserted into the dent part 4222A. The preceding two embodiments of the knob gear 42 can generate clear clicking sound resulting from the knob gear 42 interacting with the locating spring plate 162 while the turning knobs 4 are rotated. The clicking sound allows the user to feel distinct contact while the turning knobs 4 are operated to actuate the swing lever 7 and the moving in and out of CDs 11 can be performed accurately.

[0056] Referring to FIGS. 23 and 24, the top cover 5 at the periphery thereof has multiple engaging legs 511 for being inserted into the locating holes 17 and the engaging recess 311 of the left and right covers 3A, 3B and at the upper middle side thereof has a backward recess 51 with the elastic button 52. When the front cover 2 is closed, the elastic button 52 at the holding hook 521 thereof can catch the engaging lock hook 22 so as to form a state of locking between the front cover 2 and the top cover 5. Further, the top cover 5 at the central area thereof is a grip recess 53 for receiving the grip handle 9. Two lateral sides of the grip recess 53 have an axial hole 531 respectively for engaging with two hook ends 91 of the grip handle 9 so that the grip handle 9 can be rotationally placed in the grip recess 53. The top cover 5 at two lateral sides thereof has upper securing holes 54 for securing the right frame 10A and the left frame 10B. The rear side of the top cover 5 has a plurality of touching legs 55 corresponding to the support plates 83 of the rear cover for locating the locating swing levers 7.

[0057] Referring to FIG. 25 in company with FIGS. 5 and 22, the brake shaft 6 at the surface thereof has a plurality of abrupt pieces 61 being arranged as a spiral shape corresponding to the inlet grooves 15 and at two ends thereof provides an anti-slip rib 611 with an annular recess 612 so that the driven gear 62 can be fixedly attached to the ends respectively with a retaining ring 4231 being located at the annular recess 612.

[0058] Referring to FIGS. 26 and 27 in company with FIGS. 8 to 10, each swing lever 7 at the top thereof has two opposite lateral circular projections 71 so as to be inserted into a space between adjacent support plates 83 and held by a circular opening 831 on the support plates 83. The swing lever 7 has an elongated groove 72 longitudinally disposed at the central position thereof for receiving one of the CDs 11 and one of the abrupt pieces 61 on the brake shaft 6 can stir the swing lever 7 to push the CD 11 outward.

[0059] Referring FIG. 27 again, the rear cover 8 at the periphery thereof provides a plurality of lock pieces 81 on the outer side thereof so as to be joined to the main box frame 1 and the left and right covers 3A, 3B tightly. The support plates 83 are disposed at the inner upper part thereof corresponding to the guide groove partitions 14 for holding the swing levers 7 and a lower locating base 84, which is provided with a plurality of fork shaped clearances corresponding the support plates 83, is disposed at the bottom of the rear cover 8 for limiting and locating the swing lever 7. Further, the rear cover 8 at the inner side of the periphery also has lock pieces 82 for engaging with the main box frame 1. As the preceding explanation, the support plates 83 have semi-circular openings 831 for holding the circular projections on each swing lever 7. The support plates 83 at the bottoms thereof have outward feet 832 corresponding to the locating grooves 19 at the rear side of the main box frame 1.

[0060] Referring to FIG. 23 in company with FIG. 5 again, as the preceding statement, the grip handle 9 is received in the handle nest 53 at the central area of the top cover 5 so that it is convenient for the user to carry the CD storage box with him. The grip handle 9 at two ends thereof has an engaging hook 91 so as to be joined to the axial holes in the top cover 5.

[0061] Referring to FIGS. 28 to 30 in company with FIG. 3, the left and right frames 10A, 10B at the upper sides thereof have a transverse groove 101 for being inserted with stand projections 18 at two lateral sides of the bottom of the main box frame on another CD storage box during stacking to the original CD storage box. A plurality of fixing holes 102 are provided at the bottoms of the left and right frames 10A, 10B corresponding to the securing holes 54 at the lateral sides of the top cover 5 so as to be fastened to the top cover 5. The left and right frames 10A, 10B have an integrated elastic hook 103 with a lock part 104 corresponding to a groove 181 at the respective stand projection 18. Hence, the lock part 104 can fit with the groove 181 to join two CD storage boxes and the lock part 104 is away the groove 181 in case of the elastic hook 103 being pressed downward to allow the two joined CD storage boxes being detached from each other.

[0062] It is appreciated that the CD storage box according to the present invention provides the turning knobs 4, which actuate the knob gear 42 to drive the driven gears 62, and the brake shaft 6, which provides abrupt pieces 62, is rotated with the driven gears 62 to actuate the swing levers 7 such that multiple CDs 11 can be pushed outward for being chosen by the user. Due to the knob gear 42 being provided with spacing apart locating notches 4221 at the circumference thereof to contact with the locating spring plate 162, the engaging and locating design of the knob gear 42 and the locating spring plate 162 can generate intermittent contacts and the user can substantially feels the contacts. Moreover, the abrupt pieces 61 on the brake shaft 6 is arranged in a shape of helix corresponding to the swing levers 7 so that multiple CDs 11 can be sent out at the same time for being browsed and selected by the user. Furthermore, the locating notches 4221 on the circumference of the gear base 422 are V shaped with a 90° respectively can engage with the locating spring plate 162 firmly so that the swing levers 7 can be in a state of unmoved and the sent out CDs 11 stand still as well for being taken out easily.

[0063] As the foregoing, the CD storage box has the following advantages and features:

[0064] 1. A grip handle is provided: the user can carry the CD storage box with him conveniently instead of the conventional CD box without handle.

[0065] 2. The CD storage box of the present invention can prevent the CDs from falling: the center of gravity of the CD storage box can move backward during the CD storage box being carried about to avoid fallen CDs resulting from swiveling.

[0066] 3. The present invention makes multiple stacked CD storage boxes possible: The CD storage box is provided with a stacking frame structure so that it is possible for the user to stack multiple CD storage boxes as desired for saving occupied space.

[0067] 4. The CDs are positioned after being sent out: The mechanism of knob gear against the pressing jut of the locating spring plate makes multiple spaced apart located positions for CDs being sent out possible so that the user can browse the CDs from different directions easily instead of the conventional CD box being required the aid of a hand.

[0068] 5. A light and compact assembly is furnished: An idea of design for assembly is involved in the CD storage box of the present invention so that the entire CD storage box can be assembled with hook and lock by pressing force easily.

[0069] While the invention has been described with reference to preferred embodiments thereof, it is to be understood that modifications or variations may be easily made without departing from the spirit of this invention, which is defined by the appended claims. 

What is claimed is:
 1. A CD storage box, comprising: a main box frame, having an open front and rear sides with a plurality of shaft supports being disposed spacing apart from each other at a top wall and near the rear side thereof, providing a projection at a left lower side with a fitting groove next to the front side, providing a pin shaft attached with a speed reduce gear, a spring groove being disposed at a right lower side thereof, having a plurality of integrated and equally spaced curved guide groove partitions to form a plurality of guide grooves at an internal part thereof between the top wall and a bottom wall, having a locating recess at the rear side, extending outward a shaft at both upper lateral sides thereof next to two of the shaft supports, a locating groove being disposed beside the shaft, both the top wall and two lateral walls thereof having a plurality of fitting holes and the bottom at two sides thereof extends downward a stand projection; a front cover, at an inner side thereof having a row of arched guide grooves corresponding to the inlet grooves, the inner side at a central upper edge thereof having a lock hook, a bottom at two lateral sides thereof having an outward extending pin respectively and a torsion spring being disposed at one of two lateral sides thereof next to the pin, at a lower corner thereof having a sector shaped gear meshing with the speed reduce gear; a left and right covers, at a respective periphery thereof having a joining rim with engaging recesses for being joined to the main box frame tightly, a respective inner side thereof having a plurality of holding jaws equally spaced from each other and provide a respective piercing hole and a respective pin hole being located at a respective lower front corner thereof for fitting with the pins of the front cover; two turning knobs, being disposed at a respective outer side of the left and right covers corresponding to the respective piercing hole and being provided with an axial groove respectively; two knob gears, having a respective shaft extending axially from a lateral side thereof to join with the respective axial groove and being located at the respective shaft of the main box frame; a top cover, at a periphery thereof having a plurality of engaging legs being inserted into the fitting hole at the top wall of the main box frame and the engaging recesses of the left and right covers and at the upper middle side thereof having a backward recess with an elastic button, which has a holding hook, to catch the lock hook of the front cover during the front cover being closed so as to form a state of engaging with the front cover, at the central area thereof being a handle nest with two lateral sides of the handle nest having an axial hole respectively and at a rear side thereof having a plurality of touching legs; a brake shaft, being mounted to the shaft supports, at an outer surface thereof having a plurality of abrupt pieces 61 being arranged as a spiral shape corresponding to the inlet grooves and at two ends thereof providing an anti-slip rib with an annular recess so that the driven gear can be fixedly attached to the two ends respectively with a retaining ring being located at the annular recess; a rear cover, at a periphery thereof providing a plurality of outer lock pieces so as to be joined to the main box frame and the left and right covers tightly, at an inner upper part thereof having a plurality of support plates corresponding to the guide groove partitions and at a bottom thereof having a lower locating base with a plurality of fork shaped clearances corresponding to the support plates, at an inner side of the periphery having a plurality lock pieces for engaging with the main box frame. a plurality of swing levers, each of the swing levers at a top thereof having two opposite lateral circular projections so as to be inserted into a space between adjacent support plates and held by a respective circular opening on the support plates, at a central position thereof having an longitudinally disposed elongated groove; a grip handle, being received in the handle nest at the central area of the top cover, at two ends thereof having an engaging hook respectively so as to be joined to the axial holes at the lateral sides of the handle nest; and a left and right frames, at the upper sides thereof having a respective transverse groove corresponding to the stand projections of the main box frame and at bottoms thereof having a plurality of fixing holes, having an integrated elastic hook with a lock part so that the lock part can fit with the groove; whereby, when a user rotates the turning knobs, the knob gears can actuate the driven gears to rotate with the b6rake shaft and abrupt pieces can stir the swing levers to push a plurality of CDs out for being chosen.
 2. The CD storage box as defined in claim 1, wherein each stand projection of the main box frame at an outer side thereof is provided with a groove for another one of the CD storage box being fixedly stacked to the storage box by way of a hook part on the left and right support frames elastically engaging with the respective groove.
 3. The CD storage box as defined in claim 1, wherein the front cover at a lower lateral side thereof is integrally made with a sector gear to mesh with the speed reduce gear and at another lower lateral side thereof next to the pin is provided with a spring groove against a leg of the torsion spring.
 4. The CD storage box as defined in claim 1, wherein the left cover is provided with a cylindrical post at a front lower side thereof corresponding to the projection to prevent the torsion spring from falling down.
 5. The CD storage box as defined in claim 1, wherein the right cover at a lower front corner has a cylindrical rib part with a small protrusion against a side face of the speed reduce gear to prevent the speed reduce gear from loosening during turning.
 6. The CD storage box as defined in claim 1, wherein the knob gear has a shaft extending axially from a lateral side thereof and a driving gear is fixedly attached to the shaft, a gear base is disposed at another lateral side opposite to the shaft with a plurality of catching hooks equally spacing apart from each other and each catching hook is next to a lateral side of a “V” shaped locating indentation respectively, the gear base has a central nest to accommodate the shaft, the locating indentation has a 90° open angle for contacting with a pressing jut of the locating spring plate, a bulge is next to the other lateral side of the locating indentation to correspond to a notch and once the bulge engages with the notch, it is not possible for the user to rotate the turning knob counterclockwise and it is possible for the knob gear to rotationally move back and forth in a free extent as long as the bulge keeps contact with the notch.
 7. The CD storage box as defined in claim 1, wherein the gear base has a plurality of locating pairs equally spaced apart from each other and each locating pair has a V shaped locating part with an open angle of 45° and two locating protrusions with about a 45° V shaped dent part between the locating projections and the locating spring plate has a about 45° slant jut corresponding to the dent part such that the knob gear can rotate clockwise only.
 8. The CD storage box as defined in claim 1, wherein the top cover at two lateral sides thereof has upper securing holes 54 for securing the right frame and the left frame.
 9. The CD storage box as defined in claim 1, wherein the support plates of the rear cover have an elongated semi-circular opening respectively to form base holes with a plurality of touching legs 55 of the top cover for holding and locating the circular projections of the swing levers and the support plates 83 at bottoms thereof have outward feet 832 corresponding to the locating grooves at the rear side of the main box frame. 